在零基础学习python1中的轮一只爬虫的自我修养03中的例子

bear涛

Traceback (most recent call last):
  File "E:/python练习/downloadmm.py", line 57, in <module>
    downloadmm()
  File "E:/python练习/downloadmm.py", line 54, in downloadmm
    save_imgs(folder,img_addrs)
  File "E:/python练习/downloadmm.py", line 39, in save_imgs
    img = url_open('//wx2.sinaimg.cn/mw600/0076BSS5ly1g3obzki1awj30p00xcafv.jpg')
  File "E:/python练习/downloadmm.py", line 4, in url_open
    req = urllib.request.Request(url)
  File "E:\python\lib\urllib\request.py", line 328, in __init__
    self.full_url = url
  File "E:\python\lib\urllib\request.py", line 354, in full_url
    self._parse()
  File "E:\python\lib\urllib\request.py", line 383, in _parse
    raise ValueError("unknown url type: %r" % self.full_url)
ValueError: unknown url type: '//wx2.sinaimg.cn/mw600/0076BSS5ly1g3obzki1awj30p00xcafv.jpg'

在save函数中报错

def save_imgs(folder,img_addrs):
    for each in img_addrs:
        filename = each.split('/')[-1]
        with open(filename,'wb') as f:
            img = url_open('//wx2.sinaimg.cn/mw600/0076BSS5ly1g3obzki1awj30p00xcafv.jpg')
            f.write(img)

chxchxkkk

网址错误了，//前面加上http:或https:试试看